Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

ECN9699 Cresol Formaldehyde Epoxy Resin

ECN9699 is a cresol formaldehyde epoxy resin from the ECN series by Nippon Kayaku—offering high thermal stability, excellent chemical resistance, and superior adhesion for advanced composites, encapsulants, and semiconductor packaging applications.
  • ecn9699 cresol formaldehyde epoxy resin_8e9929ff
  • ecn9699 cresol formaldehyde epoxy resin_8e9929ff

Features Of ECN9699 Cresol Formaldehyde Epoxy Resin

  1. High thermal stability with glass transition temperature (Tg) exceeding 150 °C after full curing.

  2. Excellent chemical resistance to acids, alkalis, and organic solvents in demanding industrial environments.

  3. Superior electrical insulation properties, including low dielectric loss and high volume resistivity.

  4. Low ionic impurity content, ensuring reliability in semiconductor encapsulation and high-performance electronics.

  5. Consistent molecular weight distribution for predictable reactivity and reproducible processing behavior.

Typical Applications Of ECN9699 Cresol Formaldehyde Epoxy Resin

  1. Semiconductor discrete device encapsulation (e.g., diodes, transistors, IC packages).

  2. Underfill materials for flip-chip and advanced wafer-level packaging.

  3. High-reliability printed circuit board (PCB) laminates and prepregs.

  4. Encapsulants for automotive electronic control units (ECUs) and sensors.

  5. Structural adhesives in aerospace composites requiring elevated temperature performance.

Specifications Of ECN9699 Cresol Formaldehyde Epoxy Resin

Chemical TypeCresol-formaldehyde novolac epoxy resin
Product FormPale yellow to amber solid flakes or granules
AppearanceFree-flowing, homogeneous solid at room temperature
Epoxy Equivalent Weight (EEW)210–230 g/eq
Softening Point85–95 °C
Chlorine Content≤ 900 ppm
Volatiles Content≤ 0.5 wt%
Storage StabilityStable for ≥12 months at <25 °C in sealed containers


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